After some small tasks, I installed the LED showing that the auxiliary battery is charging. I hesitated quite some time before installing it near the battery switch. The LED sould remain off most of the time after the battery is charged after the beginning of a flight.



I then wired the audio mixer and the intercom. The connections on the audio mixer are done, there are a few wires remaining on the intercom connector.
Most of the wires are shielded and the shields have to be connected. To do this, I leave a few millimeter of shield apparent.



I then use a solder sleeve installed with a heat gun.